class Pixel {
  int r, g, b;

  Pixel(int a, int b, int c) {
    this.r = a;
    this.g = b;
    this.b = c;
  }
}



Pixel[][] image2grid(PImage image){
  int r,g,b;
  
  Pixel [][] grid = new Pixel[image.width][image.height];
  for (int i =0; i < image.width; i++) {
    for (int j=0; j < image.height; j++) {
      r = int(red(image.pixels[i + j * image.width])); 
      g = int(green(image.pixels[i + j * image.width])); 
      b = int(blue(image.pixels[i + j * image.width]));
      
      grid[i][j] = new Pixel(r,g,b);
    }
  }
  return grid;
}